Vented Seat Operation

The vented seat operation is designed to draw cabin air around and away from the occupant through small holes in the seat cushion and seat back covers, through channels in the foam pad, and then through the blower motor exhausting the waste air under the seat cushion.

The driver and front passenger vented seats are controlled by separate vented seat switches located in the radio/HVAC controls. With the ignition ON, ignition voltage is supplied to the driver and passenger seat blower motors through a 15 A fuse that is located in the rear body fuse block. Ground from G301 is provided to the driver seat blower motors while ground from G300 is provided to the passenger seat blower motors. When a vented seat switch is pressed, a serial data message is sent from the radio/HVAC controls to the seat heating control module indicating the vented seat command. In response to this message, the seat heating control module applies a low side pulse width modulation (PWM) signal through the seat vent motor control circuit to the seat back and cushion blower motors indication the vented seat command. The logic in the blower motors set the blower speed to the switch set point. Both blower motors run drawing cabin air around and away from occupant.